We have discovered an issue with the Livebox 3 router from Orange in France. Customers have reported problems setting up, players dropping from the household and reports of the system not being found on the controller.
Our teams are working in close cooperation with Orange to identify a fix.
In the meantime, it is possible to reboot the router to temporarily restore functionality. We know this isn’t a true solution, but it will get your music playing again.
We’ll update this topic as we discover more.
UPDATE 05/25/16 : Orange has released a firmware update
for Livebox Play, including a fix for the reported issue with Sonos. The update will be automatic, but you can also manually update